\marginparwidth 0pt\marginparsep 0pt \topskip -0.1  pt\headsep
0pt\headheight 0pt \oddsidemargin -0.in\evensidemargin 0pt
\textwidth 6.5in \topmargin 0pt\textheight 9in

% \usepackage[includeheadfoot,top=20mm, bottom=20mm, footskip=2.5cm]{geometry}
% \usepackage[includeheadfoot,left=15mm,right=15mm,top=20mm, bottom=20mm, footskip=2.5cm]{geometry}
